Demountable-rim structure



T. F. WARE. DEMOUNTABLE Rl'M STRUCTURE.

APPLICATION FILED JULY7119I9,

1 333 5 1 I Patented Maln'9, 1920.

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ffilf ra WWO citizen or the United st y at l Application filed July 7,1919. ser'iai No. 309.247. f

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Be it known that. I, THOMAS F. WARE,

Salt Lake City, in the county ofISalt, Lake and State of Utah, have invented certain new and useful Improvements in Demount able-Rim Structures; and I 'do-declare the following to be a full, clear, and exactde scription of the invention, such as willenable others skilled in the art to which it appertains to-make and use the same.

This invention relates to automobile rims, and more specifically to an improved lock for demountable rims.

One object of this invention is to provide an improved demountable rim lock that is exceedingly effective, strong, durable, convenient and comparatively inexpensive. I

Other objects and advantages may become apparent to persons who read the following details of description in connection with the accompanying drawings, in which z- Figure 1 is an elevation illustrating a wheel embodying the present invention.

Fig. 2 is an enlarged radial sectional view, the section being taken along the line 2-2 of Fig. l.

Fig. 8 is an enlarged radial sectional view, the section being taken along the line 3-8 of Fig. l, the felly being omitted.

Fig. 4 is a fragmental detail view showing one of the axially and circumferentially extending grooves of the outer rim.

Fig. 5 is a perspective view of the improved key' which is shown in section in Fig. 2. 1

Referring to these drawings in detail, in

' -which similar reference characters correspond with similar parts throughout the several views,

The device consists of an outer rim 6, an inner rim 7. a locking key 8, an internally and externally threaded tubular element 9, a thumb-screw 10 and a plurality of studs 11. Any appropriate number of the studs 11 mav be provided. and a corresponding number of axially and circumferentiallv extending slots 12 is provided. it being understood that each of the studs 11 is normally seat d in a corresponding one of the grooves 12, therebv reventing axial relative movement of the inner and outer rims when in their normal relation to one another as shown in the drawings. The studs 11 are preferably formed on the ends of screws 13 which are seated and countersunk in the nEMoUNTABLE-RIM srRiIGTURri.

Speeific'ation of Letters Patent.

the event these seats inner "rim and the felly l4=, being seated against the headsof the screws13, prevents their displacement.

In' order that the inner and outer rims may beefi'ectua'lly prevented'from moving circumferei'itially with relation to one an other, a key-seat 15 is provided in the outer rim, and a corresponding key seat 16 ispro vided in the inner rim. The 'key8 is sufiiciently thick and wide to fill both of the key-seats 15 and 16 and the walls of these key-seats are in contact with the edges of the key 8, and therefore, the inner and outer l is engageable with a screw-driver or other appropriate tool for removing the. key 8 from the seats 15 and 16 when the screw 10 is disengaged with the depression 17,

and the front end of the key is substantially Patented Mag a- 1920. 4

wedge-shaped, as indicated at 23, so that it may be. forced into the seats 15 and '16 in are not in perfect registration when the key is started. By thus'forcing the key into the seats 15 and 16, the studs 11 are forced into their normal positions in the grooves 12.

In removing the inner rim from the outer rim, the key 10 is first unscrewed sufficiently to clear the depression 17 the key Sis then removed, the inner and outer rims are moved circumferentially.with relation to one an other until the studs 11 register with the axial or axially parallel portions of theslots 12, and the outer rim may now be withdrawn by moving it axially with relation to the inner rim. In replacing the outer rim, the foregoing operation is of course reversed.

Although only one of the keys and a corresponding one of the screws 1 10 is here shownand described, it is obvious that any appropriate numberof these elements may be employed in the construction of a wheel.

to the exact details of construction and arrangement here described and illustrated,

but appropriate changes may be made within the scope of the inventive ideas, as here involved;

' extending? axially and circumferentially, an

inner rim'having studs normally seated in. the circumferential parts of said grooves, a

key normally seated between said outer and inner'rims and being efl'ective to prevent circumferential relative movement of the outer and innerrims, sa d key having a depressn therein, and a screw extending through said inner rim and normally having one end engaged in the depression of said key to hold 7 the key in its effective position.

2. A demountable rim structure comprising an outer rim formedwith grooves each eXtendmg axially-and cireumferentially, an inner rim having studs normally seated in the circumferential parts of said grooves,

a key normally seated between said outer and inner rims and being effective to prevent circumferential relative movement of the outer andinner rims, said keyhaving a depression therein, a felly, a tubular member extending through the felly and inner rim and being secured to the latter, a nut threaded on saidttubular member and seated on said felly, and a screw normally extending through said felly and inner rim and into said depression of said'key. V

In testimony whereof I have hereunto set THOMAS 'F. WA E.

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